77 lines
1.8 KiB
Vue
77 lines
1.8 KiB
Vue
<!--
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SPDX-FileCopyrightText: syuilo and misskey-project
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SPDX-License-Identifier: AGPL-3.0-only
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-->
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<template>
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<span :class="$style.container">
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<span ref="content" :class="$style.content">
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<slot/>
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</span>
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</span>
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</template>
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<script lang="ts">
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interface Props {
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readonly minScale?: number;
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}
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const contentSymbol = Symbol();
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const observer = new ResizeObserver((entries) => {
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const results: {
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container: HTMLSpanElement;
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transform: string;
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}[] = [];
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for (const entry of entries) {
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const content = (entry.target[contentSymbol] ? entry.target : entry.target.firstElementChild) as HTMLSpanElement;
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const props: Required<Props> = content[contentSymbol];
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const container = content.parentElement as HTMLSpanElement;
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const contentWidth = content.getBoundingClientRect().width;
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const containerWidth = container.getBoundingClientRect().width;
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results.push({ container, transform: `scaleX(${Math.max(props.minScale, Math.min(1, containerWidth / contentWidth))})` });
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}
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for (const result of results) {
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result.container.style.transform = result.transform;
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}
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});
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</script>
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<script setup lang="ts">
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import { ref, watch } from 'vue';
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const props = withDefaults(defineProps<Props>(), {
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minScale: 0,
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});
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const content = ref<HTMLSpanElement>();
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watch(content, (value, oldValue) => {
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if (oldValue) {
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delete oldValue[contentSymbol];
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observer.unobserve(oldValue);
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if (oldValue.parentElement) {
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observer.unobserve(oldValue.parentElement);
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}
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}
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if (value) {
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value[contentSymbol] = props;
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observer.observe(value);
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if (value.parentElement) {
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observer.observe(value.parentElement);
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}
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}
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});
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</script>
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<style module lang="scss">
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.container {
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display: inline-block;
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max-width: 100%;
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transform-origin: 0;
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}
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.content {
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display: inline-block;
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white-space: nowrap;
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}
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</style>
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